en 129 / mbed-src

[11U68]fix P0_11 to use GPIO

Fork of mbed-src by mbed official

targets/hal/TARGET_NXP/TARGET_LPC11U6X/gpio_api.c@227:7bd0639b8911, 2014-06-11 (annotated)

Committer:
mbed_official
Date:
Wed Jun 11 16:00:09 2014 +0100
Revision:
227:7bd0639b8911
Parent:
207:05668db47a72
Child:
398:7a7127adb6e8
Synchronized with git revision d58d532ebc0e0a96f4fffb8edefc082b71b964af



Full URL: https://github.com/mbedmicro/mbed/commit/d58d532ebc0e0a96f4fffb8edefc082b71b964af/

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 174:8bb9f3a33240 1 /* mbed Microcontroller Library
mbed_official 174:8bb9f3a33240 2 * Copyright (c) 2006-2014 ARM Limited
mbed_official 174:8bb9f3a33240 3 *
mbed_official 174:8bb9f3a33240 4 * Licensed under the Apache License, Version 2.0 (the "License");
mbed_official 174:8bb9f3a33240 5 * you may not use this file except in compliance with the License.
mbed_official 174:8bb9f3a33240 6 * You may obtain a copy of the License at
mbed_official 174:8bb9f3a33240 7 *
mbed_official 174:8bb9f3a33240 8 * http://www.apache.org/licenses/LICENSE-2.0
mbed_official 174:8bb9f3a33240 9 *
mbed_official 174:8bb9f3a33240 10 * Unless required by applicable law or agreed to in writing, software
mbed_official 174:8bb9f3a33240 11 * distributed under the License is distributed on an "AS IS" BASIS,
mbed_official 174:8bb9f3a33240 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
mbed_official 174:8bb9f3a33240 13 * See the License for the specific language governing permissions and
mbed_official 174:8bb9f3a33240 14 * limitations under the License.
mbed_official 174:8bb9f3a33240 15 */
mbed_official 227:7bd0639b8911 16 #include "mbed_assert.h"
mbed_official 174:8bb9f3a33240 17 #include "gpio_api.h"
mbed_official 174:8bb9f3a33240 18 #include "pinmap.h"
mbed_official 174:8bb9f3a33240 19
mbed_official 174:8bb9f3a33240 20 static int gpio_enabled = 0;
mbed_official 174:8bb9f3a33240 21
mbed_official 174:8bb9f3a33240 22 static void gpio_enable(void) {
mbed_official 174:8bb9f3a33240 23 gpio_enabled = 1;
mbed_official 174:8bb9f3a33240 24
mbed_official 174:8bb9f3a33240 25 /* Enable AHB clock to the GPIO and IOCON domain. */
mbed_official 174:8bb9f3a33240 26 LPC_SYSCON->SYSAHBCLKCTRL |= ((1 << 16) | (1 << 6));
mbed_official 174:8bb9f3a33240 27 }
mbed_official 174:8bb9f3a33240 28
mbed_official 174:8bb9f3a33240 29 uint32_t gpio_set(PinName pin) {
mbed_official 227:7bd0639b8911 30 MBED_ASSERT(pin != (PinName)NC);
mbed_official 174:8bb9f3a33240 31 if (!gpio_enabled)
mbed_official 174:8bb9f3a33240 32 gpio_enable();
mbed_official 174:8bb9f3a33240 33
mbed_official 207:05668db47a72 34 int f = ((pin == P0_0) ||
mbed_official 207:05668db47a72 35 (pin == P0_10) ||
mbed_official 207:05668db47a72 36 (pin == P0_15)) ? (1) : (0);
mbed_official 207:05668db47a72 37
mbed_official 207:05668db47a72 38 pin_function(pin, f);
mbed_official 207:05668db47a72 39
mbed_official 174:8bb9f3a33240 40 return (1UL << ((int)pin >> PIN_SHIFT & 0x1F));
mbed_official 174:8bb9f3a33240 41 }
mbed_official 174:8bb9f3a33240 42
mbed_official 174:8bb9f3a33240 43 void gpio_init(gpio_t *obj, PinName pin) {
mbed_official 174:8bb9f3a33240 44 obj->pin = pin;
mbed_official 227:7bd0639b8911 45 if (pin == (PinName)NC)
mbed_official 227:7bd0639b8911 46 return;
mbed_official 227:7bd0639b8911 47
mbed_official 174:8bb9f3a33240 48 obj->mask = gpio_set(pin);
mbed_official 174:8bb9f3a33240 49
mbed_official 174:8bb9f3a33240 50 unsigned int port = (unsigned int)(pin >> PORT_SHIFT);
mbed_official 227:7bd0639b8911 51
mbed_official 174:8bb9f3a33240 52 obj->reg_set = &LPC_GPIO_PORT->SET[port];
mbed_official 174:8bb9f3a33240 53 obj->reg_clr = &LPC_GPIO_PORT->CLR[port];
mbed_official 174:8bb9f3a33240 54 obj->reg_in = &LPC_GPIO_PORT->PIN[port];
mbed_official 174:8bb9f3a33240 55 obj->reg_dir = &LPC_GPIO_PORT->DIR[port];
mbed_official 174:8bb9f3a33240 56 }
mbed_official 174:8bb9f3a33240 57
mbed_official 174:8bb9f3a33240 58 void gpio_mode(gpio_t *obj, PinMode mode) {
mbed_official 174:8bb9f3a33240 59 pin_mode(obj->pin, mode);
mbed_official 174:8bb9f3a33240 60 }
mbed_official 174:8bb9f3a33240 61
mbed_official 174:8bb9f3a33240 62 void gpio_dir(gpio_t *obj, PinDirection direction) {
mbed_official 227:7bd0639b8911 63 MBED_ASSERT(obj->pin != (PinName)NC);
mbed_official 174:8bb9f3a33240 64 switch (direction) {
mbed_official 227:7bd0639b8911 65 case PIN_INPUT :
mbed_official 227:7bd0639b8911 66 *obj->reg_dir &= ~obj->mask;
mbed_official 227:7bd0639b8911 67 break;
mbed_official 227:7bd0639b8911 68 case PIN_OUTPUT:
mbed_official 227:7bd0639b8911 69 *obj->reg_dir |= obj->mask;
mbed_official 227:7bd0639b8911 70 break;
mbed_official 174:8bb9f3a33240 71 }
mbed_official 174:8bb9f3a33240 72 }